In particular, I tend to like solid colors more than patterns: Tracking patterns takes mental energy - watching and wearing.
As I've mentioned, colors tend to affect me, especially if they're good colors. Pastels and other bright colors - especially in the red and blue families (and yes, purple is one of my favorites; another one is pink) help top off my social fuel gauge. I also feel good when I find complementary pairs.
What do you think of my idea of a well-dressed guy (SFW)?